Merge branch 'feature/ci_checkout_same_branch_for_submodule' into 'master'

Feature/ci checkout same branch for submodule

esp-idf have several submodules like wifi-lib, bt-lib. 

esp-idf branches may need to use specific branches in submodules to get build pass and do test.

This feature will first try to checkout the branch with same name for all submodules for jobs which uses global `before_script`

See merge request !178

.gitlab-ci.yml

@@ -12,12 +12,14 @@ before_script:
   - base64 --decode --ignore-garbage ~/.ssh/id_rsa_base64 > ~/.ssh/id_rsa
   - chmod 600 ~/.ssh/id_rsa
   - echo -e "Host gitlab.espressif.cn\n\tStrictHostKeyChecking no\n" >> ~/.ssh/config
-
   # if testing master branch, use github wifi libs.
   # if testing other branches, use gitlab wifi libs (as maybe changes aren't merged to master yet)
   - test "${CI_BUILD_REF_NAME}" = "master" || sed -i "s%https://github.com/espressif/esp32-wifi-lib%ssh://git@gitlab.espressif.cn:27227/idf/esp32-wifi-lib%" .gitmodules
   # fetch all submodules
   - git submodule update --init --recursive
+  # try use submodule with same branch
+  - SUBMODULES=`cat .gitmodules | grep path | awk '{print $3}'`
+  - for MODULE in $SUBMODULES;do (echo $MODULE;cd $MODULE;git checkout ${CI_BUILD_REF_NAME} || echo "using default branch";cd $CI_PROJECT_DIR); done
 
 build_template_app:
   stage: build